Fresno County Disaster Risk
Fresno County, California
FEMA Risk Rating
Relatively High
National Percentile
99th
of 3,144 counties
State Rank
#11
of 58 (1 = highest risk)
Flood Risk
99th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Relatively High
Higher than 99% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Relatively High
Higher than 98% of US counties
Tornado
Tornado and severe thunderstorm risk
Relatively Low
Higher than 57% of US counties
Earthquake
Seismic activity and ground shaking risk
Relatively High
Higher than 99% of US counties
Risk Overview
About Natural Disaster Risk in Fresno County, California
Fresno faces relatively high national risk
Fresno County's composite risk score of 99.30 places it in the 'Relatively High' category, well above the national average. The county ranks among California's most hazard-exposed areas, experiencing significant exposure across multiple disaster types. This elevated risk profile demands comprehensive disaster preparedness from all residents and businesses.
Fresno ranks among California's highest risks
With a composite score of 99.30 versus California's 88.72 average, Fresno substantially exceeds the state baseline. The county ranks in the top tier of California's 58 counties for overall natural disaster risk. This high ranking reflects consistently elevated hazard exposure across earthquake, flood, and wildfire domains.
Fresno tops neighboring county risk levels
Fresno's 99.30 score significantly exceeds nearby Kern (98.89), Kings (92.43), and Inyo (79.33) counties, making it a regional risk leader. The county's particularly elevated flood (98.70) and wildfire (98.44) scores distinguish it from neighboring agricultural and foothill communities. Among its peers, Fresno stands out for consistently high exposure across multiple hazard types.
Earthquake, flood, and wildfire converge
Fresno's earthquake risk reaches 99.24, flood risk scores 98.70, and wildfire risk hits 98.44—creating a trifecta of major hazards. Tornado risk, at 57.12, also substantially exceeds most California counties, adding another dimension to seasonal threats. This convergence of multiple extreme risks makes Fresno one of the state's most hazard-exposed counties.
Triple coverage essential for Fresno homes
Fresno residents must secure earthquake, flood, and wildfire insurance simultaneously—standard homeowners policies exclude all three. Given the county's near-maximum scores for each hazard, these separate policies represent essential protection, not optional extras. Reviewing and updating coverage annually ensures your home and possessions remain protected against Fresno's multiple, convergent hazards.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Fresno County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Fresno County
Risk Verdict
Natural hazard exposure in Fresno County is notably high, placing it at the 99th percentile among all U.S. counties. Fresno County's elevated composite score reflects cumulative multi-hazard exposure; households should prepare for the county's two or three primary hazard types.
Hazard Breakdown
Earthquake risk is Fresno County's dominant natural hazard, ranked at the 99th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 99th percentile nationally. Additional tracked hazards include wildfire (98th percentile), tornado (57th percentile).
Preparedness Context
At the 99th percentile nationally for earthquake risk, Fresno County is in a zone where a post-earthquake communications plan matters almost as much as pre-earthquake structural preparation — phone networks are typically congested for hours after a significant event. The county's flood risk at the 99th percentile nationally is a seasonal consideration alongside the year-round earthquake threat, requiring awareness of both hazard types. For Fresno County households, the three highest-impact earthquake preparedness actions are: (1) anchor heavy furniture and water heaters, (2) store three days of water at one gallon per person per day, and (3) identify a family reunification plan for the post-quake communication blackout period.
Regional Context
A composite score 10.6 points above the California state average puts Fresno County in a higher-risk category than most counties in the state.
Is your household prepared for Fresno County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Fresno County, CA?
What types of natural hazards affect Fresno County?
How does Fresno County risk compare to the California average?
Is Fresno County at risk for earthquake?
How is natural disaster risk measured?
Why is Fresno County higher risk than average?
Data Source
Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.
Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.